18020 code
Thread Starter
AudiWorld Member
Joined: Dec 2002
Posts: 209
Likes: 0
18020 code
Was driving 30 mph in the neighborhood when the engin just stopped running. The code that came up was 18020. I know it is not the fuel pump since I can hear it energize when cranking the engine. I don't think it's an empty tank since the gauge ready 3/4 and I remember filling it up a day ago. The car cranks over strong but zero sign of firing up. I also looked at the timing belt by removing the driverside cover and it all look fine. Does anyone have any thoughts? Could it be the fuel pump relay? Has anyone ever have to replace the ecu? Do they just give out? Thanks
Banned
Joined: Oct 2000
Posts: 950
Likes: 1
Other people here have had that code without the engine stopping
Of course you should verify the ECM coding against what's specified and try to recode it, but if that doesn't get it running, check out the engine speed (crankshaft position) sensor as well, which has stopped a few cars w/o codes.
Tom
Tom
Thread Starter
AudiWorld Member
Joined: Dec 2002
Posts: 209
Likes: 0
18020 code update
I performed output test NONE of the fuel injectors were activated, ALL other components for output test did.
I checked pin 1 to ground on injector harness according to bentley and 12v check so there is power to injectors when ignition is put to run.
I also check pin 2 and 4 from ecu power relay harness and got 12v too with ignition on run.
I THINK this means that the ecu is not providing some type of signal. Any thoughts?
I checked pin 1 to ground on injector harness according to bentley and 12v check so there is power to injectors when ignition is put to run.
I also check pin 2 and 4 from ecu power relay harness and got 12v too with ignition on run.
I THINK this means that the ecu is not providing some type of signal. Any thoughts?
Trending Topics
AudiWorld Senior Member
Joined: Jan 2004
Posts: 680
Likes: 9
From: Nor Cal
Disconncect ECU, inspect and clean contacts, spray electric contact cleaner and reseat
As we discussed off-line, the injectors are provided with a constant hot and the ecu grounds them at the appropriate time to complete the circuit and open them. Three things come to mind. The ECU, the ECU's Grounds or the sensor(s) providing timing signal to the ECU.
It is time to open the black box, check for wetness , dry things out, open and clean all the connectors.
Anyone got a spare ECU lying around to loan him? Mine won't work, it's a 2000.
It is time to open the black box, check for wetness , dry things out, open and clean all the connectors.
Anyone got a spare ECU lying around to loan him? Mine won't work, it's a 2000.
AudiWorld Stories
Bringing Audi to Life for Audi Fans
2027 Audi Q7 and SQ7: Audi Upgraded EVERYTHING!
Michael S. Palmer
Audi Unveils Absurdly Cool New Supercar: 10 Things You Need to Know!
Verdad Gallardo
The Highs & Lows of Every Audi C-Class Generation
Joe Kucinski
Top 10 Most Expensive Audis Ever Sold on Bring-A-Trailer
Brett Foote
10 Audi Features & Options We Miss the Most!
Joe Kucinski
Audi Recreates Crazy-Looking Speed Record Breaker From 1935
Verdad Gallardo
Coachbuilder Recreates the 1995 Audi TTS Concept
Verdad Gallardo
Every Audi V10 Car Ranked!
Joe Kucinski
9 Audi Designs That Aged Like Fine Wine
Verdad Gallardo
Thread
Thread Starter
Forum
Replies
Last Post
Mr. Z
VAG-COM Discussion
3
Jan 23, 2006 02:08 PM
Type44_SCCA_Rally
Audi 5000 / 200 / V8 Discussion
10
Sep 8, 2004 04:57 AM
